Mathematics
Solve the following equation:
3x2 = 2x + 8
Quadratic Equations
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Answer
Given, 3x2 = 2x + 8.
⇒ 3x2 - 2x - 8 = 0
⇒ 3x2 - 6x + 4x - 8 = 0
⇒ 3x(x - 2) + 4(x - 2) = 0
⇒ (3x + 4)(x - 2) = 0
⇒ 3x + 4 = 0 or x - 2 = 0
⇒ 3x = -4 or x = 2
⇒ x = or x = 2.
Hence, roots of the given equations are 2, .
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